Andy Rouse / Chinstrap penguin (Pygoscelis antarcticus) group on blue iceberg, Antarctica
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Floris van Breugel / Colorful layers of rock on the inside of Mount St Helens' crater, seen from the rim. Washington, USA. May 2013
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Nick Garbutt / Maliau Falls (6th of 7 tiers) on the Maliau River with a brooding storm in the sky. Centre of Maliau Basin, Sabah's 'Lost World', Borneo.
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Theo Bosboom / Layers of colourful flysch rock partly covered with sand and with common limpets (patella vulgata) on several places, as photographed on Barinatxe beach in the Blibao region in Northeast Spain. April...
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Juan Carlos Munoz / Monastery terrace on Skellig Michael, Skellig Islands World Heritage Site, County Kerry, Republic of Ireland. September 2015.
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Juan Carlos Munoz / Monastery terraces on Skellig Michael, Skellig Islands World Heritage Site, County Kerry, Republic of Ireland. September 2015.
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Kirkendall-Spring / Travertine terraces, Mammoth Hot Springs, Yellowstone National Park, Wyoming, USA. January 2016.
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Kirkendall-Spring / Travertine terraces, Mammoth Hot Springs, Yellowstone National Park, Wyoming, USA. January 2016.
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Kirkendall-Spring / Sunrise at Mammoth Hot Springs, Yellowstone National Park, Wyoming, USA. September 2015.
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Kirkendall-Spring / Sunrise at Mammoth Hot Springs in Yellowstone National Park, Wyoming, USA. September 2015.
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Kirkendall-Spring / Sunrise at Mammoth Hot Springs, Yellowstone National Park, Wyoming, USA. September 2015.
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Kirkendall-Spring / Sunrise at Mammoth Hot Springs, Yellowstone National Park, Wyoming, USA. September 2015.
